/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:38:43,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:38:43,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:38:43,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:38:43,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:38:43,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:38:43,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:38:43,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:38:43,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:38:43,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:38:43,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:38:43,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:38:43,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:38:43,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:38:43,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:38:43,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:38:43,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:38:43,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:38:43,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:38:43,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:38:43,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:38:43,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:38:43,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:38:43,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:38:43,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:38:43,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:38:43,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:38:43,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:38:43,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:38:43,085 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:38:43,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:38:43,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:38:43,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:38:43,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:38:43,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:38:43,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:38:43,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:38:43,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:38:43,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:38:43,088 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:38:43,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:38:43,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:38:43,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:38:43,268 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:38:43,268 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:38:43,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-01-28 01:38:44,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:38:44,432 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:38:44,433 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-01-28 01:38:44,443 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f257f4f1d/1b80cc8fc6244ccf9eac4d436bac21ce/FLAGe40266527 [2023-01-28 01:38:44,453 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f257f4f1d/1b80cc8fc6244ccf9eac4d436bac21ce [2023-01-28 01:38:44,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:38:44,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:38:44,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:38:44,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:38:44,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:38:44,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dfec5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44, skipping insertion in model container [2023-01-28 01:38:44,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:38:44,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:38:44,655 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2023-01-28 01:38:44,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:38:44,679 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:38:44,722 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2023-01-28 01:38:44,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:38:44,762 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:38:44,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44 WrapperNode [2023-01-28 01:38:44,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:38:44,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:38:44,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:38:44,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:38:44,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,808 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-01-28 01:38:44,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:38:44,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:38:44,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:38:44,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:38:44,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:38:44,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:38:44,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:38:44,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:38:44,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (1/1) ... [2023-01-28 01:38:44,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:38:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:38:44,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 01:38:44,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 01:38:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:38:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:38:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:38:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:38:44,890 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:38:44,995 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:38:44,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:38:45,269 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:38:45,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:38:45,274 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:38:45,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:38:45 BoogieIcfgContainer [2023-01-28 01:38:45,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:38:45,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:38:45,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:38:45,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:38:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:38:44" (1/3) ... [2023-01-28 01:38:45,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f42abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:38:45, skipping insertion in model container [2023-01-28 01:38:45,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:44" (2/3) ... [2023-01-28 01:38:45,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f42abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:38:45, skipping insertion in model container [2023-01-28 01:38:45,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:38:45" (3/3) ... [2023-01-28 01:38:45,281 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-01-28 01:38:45,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:38:45,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:38:45,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:38:45,328 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:38:45,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 117 transitions, 242 flow [2023-01-28 01:38:45,402 INFO L130 PetriNetUnfolder]: 17/152 cut-off events. [2023-01-28 01:38:45,403 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:38:45,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 152 events. 17/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-01-28 01:38:45,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 117 transitions, 242 flow [2023-01-28 01:38:45,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 112 transitions, 229 flow [2023-01-28 01:38:45,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:45,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 112 transitions, 229 flow [2023-01-28 01:38:45,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 112 transitions, 229 flow [2023-01-28 01:38:45,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 229 flow [2023-01-28 01:38:45,451 INFO L130 PetriNetUnfolder]: 16/147 cut-off events. [2023-01-28 01:38:45,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:38:45,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 147 events. 16/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 333 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-01-28 01:38:45,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 2706 [2023-01-28 01:38:47,677 INFO L134 LiptonReduction]: Checked pairs total: 4811 [2023-01-28 01:38:47,677 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-01-28 01:38:47,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:47,692 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:47,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:47,695 INFO L130 PetriNetUnfolder]: 2/19 cut-off events. [2023-01-28 01:38:47,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:38:47,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:47,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:38:47,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:47,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 279667799, now seen corresponding path program 1 times [2023-01-28 01:38:47,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:47,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428066737] [2023-01-28 01:38:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:47,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:47,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:47,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:47,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:47,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:47,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:38:47,865 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:47,870 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:47,870 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:47,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:38:47,895 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:38:47,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 152 transitions, 322 flow [2023-01-28 01:38:47,951 INFO L130 PetriNetUnfolder]: 31/246 cut-off events. [2023-01-28 01:38:47,951 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:38:47,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 31/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 717 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-01-28 01:38:47,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 152 transitions, 322 flow [2023-01-28 01:38:47,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 152 transitions, 322 flow [2023-01-28 01:38:47,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:47,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 152 transitions, 322 flow [2023-01-28 01:38:47,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 152 transitions, 322 flow [2023-01-28 01:38:47,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 152 transitions, 322 flow [2023-01-28 01:38:47,977 INFO L130 PetriNetUnfolder]: 31/246 cut-off events. [2023-01-28 01:38:47,978 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:38:47,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 31/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 717 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-01-28 01:38:47,983 INFO L119 LiptonReduction]: Number of co-enabled transitions 8316 [2023-01-28 01:38:50,410 INFO L134 LiptonReduction]: Checked pairs total: 18331 [2023-01-28 01:38:50,410 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-01-28 01:38:50,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:50,412 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:50,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:50,415 INFO L130 PetriNetUnfolder]: 10/53 cut-off events. [2023-01-28 01:38:50,416 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:38:50,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:50,416 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:38:50,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:50,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -643666801, now seen corresponding path program 1 times [2023-01-28 01:38:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692859430] [2023-01-28 01:38:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:50,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:50,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:50,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:50,448 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:50,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:38:50,449 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:50,449 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:50,449 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:50,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:38:50,462 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:38:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 187 transitions, 404 flow [2023-01-28 01:38:50,487 INFO L130 PetriNetUnfolder]: 50/371 cut-off events. [2023-01-28 01:38:50,487 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:38:50,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 371 events. 50/371 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1228 event pairs, 1 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2023-01-28 01:38:50,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 187 transitions, 404 flow [2023-01-28 01:38:50,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 187 transitions, 404 flow [2023-01-28 01:38:50,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:50,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 187 transitions, 404 flow [2023-01-28 01:38:50,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 187 transitions, 404 flow [2023-01-28 01:38:50,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 187 transitions, 404 flow [2023-01-28 01:38:50,514 INFO L130 PetriNetUnfolder]: 50/371 cut-off events. [2023-01-28 01:38:50,515 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:38:50,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 371 events. 50/371 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1228 event pairs, 1 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2023-01-28 01:38:50,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 16038 [2023-01-28 01:38:53,071 INFO L134 LiptonReduction]: Checked pairs total: 34965 [2023-01-28 01:38:53,071 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-01-28 01:38:53,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:53,073 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:53,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:53,078 INFO L130 PetriNetUnfolder]: 19/87 cut-off events. [2023-01-28 01:38:53,078 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:38:53,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:53,078 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:38:53,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:53,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1949228637, now seen corresponding path program 1 times [2023-01-28 01:38:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134665942] [2023-01-28 01:38:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:53,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:53,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:53,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:53,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:53,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:53,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:38:53,148 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:53,148 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:53,148 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:53,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:38:53,163 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:38:53,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 488 flow [2023-01-28 01:38:53,222 INFO L130 PetriNetUnfolder]: 81/560 cut-off events. [2023-01-28 01:38:53,222 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:38:53,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 560 events. 81/560 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2118 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 391. Up to 32 conditions per place. [2023-01-28 01:38:53,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 222 transitions, 488 flow [2023-01-28 01:38:53,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 222 transitions, 488 flow [2023-01-28 01:38:53,228 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:53,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 222 transitions, 488 flow [2023-01-28 01:38:53,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 222 transitions, 488 flow [2023-01-28 01:38:53,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 488 flow [2023-01-28 01:38:53,269 INFO L130 PetriNetUnfolder]: 81/560 cut-off events. [2023-01-28 01:38:53,269 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:38:53,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 560 events. 81/560 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2118 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 391. Up to 32 conditions per place. [2023-01-28 01:38:53,285 INFO L119 LiptonReduction]: Number of co-enabled transitions 26136 [2023-01-28 01:38:55,523 INFO L134 LiptonReduction]: Checked pairs total: 59650 [2023-01-28 01:38:55,524 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-01-28 01:38:55,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:55,525 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:55,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:55,535 INFO L130 PetriNetUnfolder]: 29/127 cut-off events. [2023-01-28 01:38:55,536 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:38:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:55,536 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:38:55,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:55,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash 158876387, now seen corresponding path program 1 times [2023-01-28 01:38:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214409705] [2023-01-28 01:38:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:55,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:55,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:55,614 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:55,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:55,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:38:55,614 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:55,615 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:55,615 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:55,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:38:55,631 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:38:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 257 transitions, 574 flow [2023-01-28 01:38:55,713 INFO L130 PetriNetUnfolder]: 140/881 cut-off events. [2023-01-28 01:38:55,713 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:38:55,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 881 events. 140/881 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3972 event pairs, 23 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2023-01-28 01:38:55,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 257 transitions, 574 flow [2023-01-28 01:38:55,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 257 transitions, 574 flow [2023-01-28 01:38:55,729 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:55,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 257 transitions, 574 flow [2023-01-28 01:38:55,730 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 257 transitions, 574 flow [2023-01-28 01:38:55,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 257 transitions, 574 flow [2023-01-28 01:38:55,810 INFO L130 PetriNetUnfolder]: 140/881 cut-off events. [2023-01-28 01:38:55,810 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:38:55,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 881 events. 140/881 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3972 event pairs, 23 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2023-01-28 01:38:55,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 38610 [2023-01-28 01:38:58,243 INFO L134 LiptonReduction]: Checked pairs total: 101878 [2023-01-28 01:38:58,243 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-01-28 01:38:58,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:58,245 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:58,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:58,254 INFO L130 PetriNetUnfolder]: 43/178 cut-off events. [2023-01-28 01:38:58,254 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:38:58,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:58,254 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:38:58,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:58,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:58,255 INFO L85 PathProgramCache]: Analyzing trace with hash -572860593, now seen corresponding path program 1 times [2023-01-28 01:38:58,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:58,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167635787] [2023-01-28 01:38:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:58,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:58,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:58,286 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:58,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:38:58,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:58,287 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:58,287 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:58,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:38:58,304 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:38:58,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 292 transitions, 662 flow [2023-01-28 01:38:58,454 INFO L130 PetriNetUnfolder]: 263/1474 cut-off events. [2023-01-28 01:38:58,455 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:38:58,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1474 events. 263/1474 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7969 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 980. Up to 192 conditions per place. [2023-01-28 01:38:58,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 292 transitions, 662 flow [2023-01-28 01:38:58,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 292 transitions, 662 flow [2023-01-28 01:38:58,486 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:58,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 292 transitions, 662 flow [2023-01-28 01:38:58,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 292 transitions, 662 flow [2023-01-28 01:38:58,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 292 transitions, 662 flow [2023-01-28 01:38:58,638 INFO L130 PetriNetUnfolder]: 263/1474 cut-off events. [2023-01-28 01:38:58,638 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:38:58,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1474 events. 263/1474 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7969 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 980. Up to 192 conditions per place. [2023-01-28 01:38:58,743 INFO L119 LiptonReduction]: Number of co-enabled transitions 53460 [2023-01-28 01:39:01,402 INFO L134 LiptonReduction]: Checked pairs total: 142960 [2023-01-28 01:39:01,402 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-01-28 01:39:01,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:01,405 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:01,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:01,422 INFO L130 PetriNetUnfolder]: 56/231 cut-off events. [2023-01-28 01:39:01,422 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:39:01,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:01,422 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:01,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:01,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:01,423 INFO L85 PathProgramCache]: Analyzing trace with hash 760184947, now seen corresponding path program 1 times [2023-01-28 01:39:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:01,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592988617] [2023-01-28 01:39:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:01,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:01,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:01,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:01,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:01,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:39:01,491 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:01,492 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:01,492 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:01,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:39:01,518 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:39:01,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 327 transitions, 752 flow [2023-01-28 01:39:01,843 INFO L130 PetriNetUnfolder]: 530/2627 cut-off events. [2023-01-28 01:39:01,844 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:39:01,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 2627 events. 530/2627 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17471 event pairs, 201 based on Foata normal form. 0/2281 useless extension candidates. Maximal degree in co-relation 1692. Up to 448 conditions per place. [2023-01-28 01:39:01,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 327 transitions, 752 flow [2023-01-28 01:39:01,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 327 transitions, 752 flow [2023-01-28 01:39:01,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:01,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 327 transitions, 752 flow [2023-01-28 01:39:01,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 327 transitions, 752 flow [2023-01-28 01:39:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 327 transitions, 752 flow [2023-01-28 01:39:02,278 INFO L130 PetriNetUnfolder]: 530/2627 cut-off events. [2023-01-28 01:39:02,278 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:39:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 2627 events. 530/2627 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17471 event pairs, 201 based on Foata normal form. 0/2281 useless extension candidates. Maximal degree in co-relation 1692. Up to 448 conditions per place. [2023-01-28 01:39:02,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 70686 [2023-01-28 01:39:05,048 INFO L134 LiptonReduction]: Checked pairs total: 189902 [2023-01-28 01:39:05,048 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-01-28 01:39:05,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:05,050 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:05,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:05,076 INFO L130 PetriNetUnfolder]: 76/308 cut-off events. [2023-01-28 01:39:05,076 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:39:05,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:05,076 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:05,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:05,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash 629390707, now seen corresponding path program 1 times [2023-01-28 01:39:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32484948] [2023-01-28 01:39:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:05,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:05,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:05,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:05,105 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:05,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:05,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:39:05,106 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:05,106 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:05,106 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:05,106 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:39:05,126 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:39:05,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 362 transitions, 844 flow [2023-01-28 01:39:05,911 INFO L130 PetriNetUnfolder]: 1117/4932 cut-off events. [2023-01-28 01:39:05,912 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:39:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 4932 events. 1117/4932 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38284 event pairs, 522 based on Foata normal form. 0/4318 useless extension candidates. Maximal degree in co-relation 3109. Up to 1024 conditions per place. [2023-01-28 01:39:05,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 362 transitions, 844 flow [2023-01-28 01:39:06,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 362 transitions, 844 flow [2023-01-28 01:39:06,015 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:06,015 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 362 transitions, 844 flow [2023-01-28 01:39:06,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 362 transitions, 844 flow [2023-01-28 01:39:06,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 362 transitions, 844 flow [2023-01-28 01:39:06,878 INFO L130 PetriNetUnfolder]: 1117/4932 cut-off events. [2023-01-28 01:39:06,878 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:39:06,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 4932 events. 1117/4932 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38284 event pairs, 522 based on Foata normal form. 0/4318 useless extension candidates. Maximal degree in co-relation 3109. Up to 1024 conditions per place. [2023-01-28 01:39:07,117 INFO L119 LiptonReduction]: Number of co-enabled transitions 90288 [2023-01-28 01:39:10,155 INFO L134 LiptonReduction]: Checked pairs total: 227084 [2023-01-28 01:39:10,155 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-01-28 01:39:10,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:10,185 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:10,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:10,209 INFO L130 PetriNetUnfolder]: 105/405 cut-off events. [2023-01-28 01:39:10,210 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:39:10,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:10,210 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:10,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:10,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1596319349, now seen corresponding path program 1 times [2023-01-28 01:39:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:10,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699719142] [2023-01-28 01:39:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:10,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:10,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:10,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:10,263 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:10,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:39:10,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:10,264 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:10,264 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:10,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:39:10,287 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:39:10,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 397 transitions, 938 flow [2023-01-28 01:39:12,168 INFO L130 PetriNetUnfolder]: 2408/9605 cut-off events. [2023-01-28 01:39:12,168 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:39:12,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 9605 events. 2408/9605 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86487 event pairs, 1291 based on Foata normal form. 0/8467 useless extension candidates. Maximal degree in co-relation 5999. Up to 2304 conditions per place. [2023-01-28 01:39:12,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 397 transitions, 938 flow [2023-01-28 01:39:12,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 397 transitions, 938 flow [2023-01-28 01:39:12,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:12,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 348 places, 397 transitions, 938 flow [2023-01-28 01:39:12,390 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 348 places, 397 transitions, 938 flow [2023-01-28 01:39:12,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 397 transitions, 938 flow [2023-01-28 01:39:14,155 INFO L130 PetriNetUnfolder]: 2408/9605 cut-off events. [2023-01-28 01:39:14,155 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:39:14,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 9605 events. 2408/9605 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86487 event pairs, 1291 based on Foata normal form. 0/8467 useless extension candidates. Maximal degree in co-relation 5999. Up to 2304 conditions per place. [2023-01-28 01:39:14,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 112266 [2023-01-28 01:39:17,392 INFO L134 LiptonReduction]: Checked pairs total: 279095 [2023-01-28 01:39:17,394 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-01-28 01:39:17,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:17,397 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:17,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:17,434 INFO L130 PetriNetUnfolder]: 150/548 cut-off events. [2023-01-28 01:39:17,434 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:39:17,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:17,435 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:17,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:17,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 305852689, now seen corresponding path program 1 times [2023-01-28 01:39:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:17,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623077865] [2023-01-28 01:39:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:17,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:17,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:17,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:17,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:17,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:39:17,482 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:17,485 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:17,485 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:17,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:39:17,515 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:39:17,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 432 transitions, 1034 flow [2023-01-28 01:39:21,523 INFO L130 PetriNetUnfolder]: 5235/19142 cut-off events. [2023-01-28 01:39:21,523 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:39:21,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24348 conditions, 19142 events. 5235/19142 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 194220 event pairs, 3084 based on Foata normal form. 0/16968 useless extension candidates. Maximal degree in co-relation 11962. Up to 5120 conditions per place. [2023-01-28 01:39:21,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 432 transitions, 1034 flow [2023-01-28 01:39:22,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 432 transitions, 1034 flow [2023-01-28 01:39:22,145 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:22,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 432 transitions, 1034 flow [2023-01-28 01:39:22,145 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 432 transitions, 1034 flow [2023-01-28 01:39:22,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 432 transitions, 1034 flow [2023-01-28 01:39:26,163 INFO L130 PetriNetUnfolder]: 5235/19142 cut-off events. [2023-01-28 01:39:26,164 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:39:26,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24348 conditions, 19142 events. 5235/19142 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 194220 event pairs, 3084 based on Foata normal form. 0/16968 useless extension candidates. Maximal degree in co-relation 11962. Up to 5120 conditions per place. [2023-01-28 01:39:27,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 136620 [2023-01-28 01:39:29,603 INFO L134 LiptonReduction]: Checked pairs total: 384339 [2023-01-28 01:39:29,603 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-01-28 01:39:29,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:29,626 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:29,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:29,746 INFO L130 PetriNetUnfolder]: 224/762 cut-off events. [2023-01-28 01:39:29,746 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:39:29,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:29,747 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:29,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:29,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash -19076975, now seen corresponding path program 1 times [2023-01-28 01:39:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133405371] [2023-01-28 01:39:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:29,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:29,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:29,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:29,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:29,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:29,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:39:29,804 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:29,804 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:29,804 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:29,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:39:29,830 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:39:29,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 467 transitions, 1132 flow [2023-01-28 01:39:38,617 INFO L130 PetriNetUnfolder]: 11390/38663 cut-off events. [2023-01-28 01:39:38,618 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:39:39,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50027 conditions, 38663 events. 11390/38663 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 439465 event pairs, 7181 based on Foata normal form. 0/34429 useless extension candidates. Maximal degree in co-relation 24326. Up to 11264 conditions per place. [2023-01-28 01:39:39,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 467 transitions, 1132 flow [2023-01-28 01:39:39,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 467 transitions, 1132 flow [2023-01-28 01:39:39,881 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:39,881 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 408 places, 467 transitions, 1132 flow [2023-01-28 01:39:39,881 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 408 places, 467 transitions, 1132 flow [2023-01-28 01:39:39,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 467 transitions, 1132 flow [2023-01-28 01:39:48,928 INFO L130 PetriNetUnfolder]: 11390/38663 cut-off events. [2023-01-28 01:39:48,929 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:39:50,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50027 conditions, 38663 events. 11390/38663 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 439465 event pairs, 7181 based on Foata normal form. 0/34429 useless extension candidates. Maximal degree in co-relation 24326. Up to 11264 conditions per place. [2023-01-28 01:39:52,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 163350 [2023-01-28 01:39:54,787 INFO L134 LiptonReduction]: Checked pairs total: 415544 [2023-01-28 01:39:54,788 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-01-28 01:39:54,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:54,790 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:54,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:54,880 INFO L130 PetriNetUnfolder]: 349/1091 cut-off events. [2023-01-28 01:39:54,880 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:39:54,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:54,880 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:54,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:54,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2081936592, now seen corresponding path program 1 times [2023-01-28 01:39:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377688067] [2023-01-28 01:39:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:54,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:54,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:54,925 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:54,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:39:54,926 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:54,927 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:54,927 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:54,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:39:54,954 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:39:54,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 502 transitions, 1232 flow [2023-01-28 01:40:14,796 INFO L130 PetriNetUnfolder]: 24713/78664 cut-off events. [2023-01-28 01:40:14,796 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:40:18,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103355 conditions, 78664 events. 24713/78664 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 979789 event pairs, 16398 based on Foata normal form. 0/70322 useless extension candidates. Maximal degree in co-relation 50003. Up to 24576 conditions per place. [2023-01-28 01:40:18,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 502 transitions, 1232 flow [2023-01-28 01:40:20,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 502 transitions, 1232 flow [2023-01-28 01:40:20,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:20,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 502 transitions, 1232 flow [2023-01-28 01:40:20,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 502 transitions, 1232 flow [2023-01-28 01:40:20,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 502 transitions, 1232 flow [2023-01-28 01:40:40,705 INFO L130 PetriNetUnfolder]: 24713/78664 cut-off events. [2023-01-28 01:40:40,706 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:40:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103355 conditions, 78664 events. 24713/78664 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 979789 event pairs, 16398 based on Foata normal form. 0/70322 useless extension candidates. Maximal degree in co-relation 50003. Up to 24576 conditions per place. [2023-01-28 01:40:51,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 192456 [2023-01-28 01:40:54,453 INFO L134 LiptonReduction]: Checked pairs total: 548308 [2023-01-28 01:40:54,453 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-01-28 01:40:54,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:54,455 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:54,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:54,586 INFO L130 PetriNetUnfolder]: 560/1604 cut-off events. [2023-01-28 01:40:54,586 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:40:54,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:54,587 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:54,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:54,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 682333570, now seen corresponding path program 1 times [2023-01-28 01:40:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:54,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843435589] [2023-01-28 01:40:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:54,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:54,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:54,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:54,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:54,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:40:54,661 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:54,663 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:54,663 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:54,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:40:54,692 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:40:54,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 537 transitions, 1334 flow [2023-01-28 01:41:38,662 INFO L130 PetriNetUnfolder]: 53396/160649 cut-off events. [2023-01-28 01:41:38,662 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:41:48,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214028 conditions, 160649 events. 53396/160649 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2158530 event pairs, 36879 based on Foata normal form. 0/144103 useless extension candidates. Maximal degree in co-relation 103329. Up to 53248 conditions per place. [2023-01-28 01:41:48,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 468 places, 537 transitions, 1334 flow [2023-01-28 01:41:52,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 468 places, 537 transitions, 1334 flow [2023-01-28 01:41:52,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:52,745 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 468 places, 537 transitions, 1334 flow [2023-01-28 01:41:52,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 468 places, 537 transitions, 1334 flow [2023-01-28 01:41:52,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 537 transitions, 1334 flow [2023-01-28 01:42:36,517 INFO L130 PetriNetUnfolder]: 53396/160649 cut-off events. [2023-01-28 01:42:36,518 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:42:46,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214028 conditions, 160649 events. 53396/160649 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2158530 event pairs, 36879 based on Foata normal form. 0/144103 useless extension candidates. Maximal degree in co-relation 103329. Up to 53248 conditions per place. [2023-01-28 01:43:04,665 INFO L119 LiptonReduction]: Number of co-enabled transitions 223938 [2023-01-28 01:43:07,392 INFO L134 LiptonReduction]: Checked pairs total: 553209 [2023-01-28 01:43:07,392 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-01-28 01:43:07,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:07,397 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2409e384, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:07,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:07,613 INFO L130 PetriNetUnfolder]: 913/2408 cut-off events. [2023-01-28 01:43:07,613 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:43:07,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:07,613 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:07,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:07,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 303454467, now seen corresponding path program 1 times [2023-01-28 01:43:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104780121] [2023-01-28 01:43:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:07,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:07,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:07,679 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:07,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:43:07,680 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:07,680 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:07,680 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:07,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:43:07,707 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:43:07,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 572 transitions, 1438 flow